Why conservationists in the Scottish Highlands are chasing the UK's most threatened breeding duck.

Europe's Sentinel-2a satellite, which will "carpet map" the Earth's land surface day-in, day-out, is on course to go into full operation in early or mid-October.

Archaeologists believe they may have found the remains of a house where people who built Avebury stone circle may have lived.

More than 1,000 tech experts, scientists and researchers have written a letter warning about the dangers of autonomous weapons.

A hunter paid a $54,000 (£35,000) bribe to wildlife guides to kill an "iconic" lion in Zimbabwe, a conservationist tells the BBC.

A human tooth dating to around 565,000 years ago has been found by a 16-year-old volunteer in France.

Investigators say a fatal Virgin Galactic spaceship crash last year was caused by structural failure after the co-pilot unlocked a braking system early.

Scientists identify the remains of four English men who were among the early leaders of Virginia's Jamestown settlement - the first successful British colony.